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ASTM E975

Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation

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Organization: ASTM
Publication Date: 15 February 2013
Status: active
Page Count: 7
ICS Code (Steels): 77.080.20
scope:

This practice covers the determination of retained austenite phase in steel using integrated intensities (area under peak above background) of X-ray diffraction peaks using chromium Kα or molybdenum Kα X-radiation. 

The method applies to carbon and alloy steels with near random crystallographic orientations of both ferrite and austenite phases. 

This practice is valid for retained austenite contents from 1 % by volume and above. 

If possible, X-ray diffraction peak interference from other crystalline phases such as carbides should be eliminated from the ferrite and austenite peak intensities. 

Substantial alloy contents in steel cause some change in peak intensities which have not been considered in this method. Application of this method to steels with total alloy contents exceeding 15 weight % should be done with care. If necessary, the users can calculate the theoretical correction factors to account for changes in volume of the unit cells for austenite and ferrite resulting from variations in chemical composition.

Units-The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Document History

ASTM E975
February 15, 2013
Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation
This practice covers the determination of retained austenite phase in steel using integrated intensities (area under peak above background) of X-ray diffraction peaks using chromium Kα or molybdenum...
November 1, 2003
Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation
This practice covers the determination of retained austenite phase in steel using integrated intensities (area under peak above background) of X-ray diffraction peaks using chromium Ka or molybdenum...
November 1, 2003
Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation
This practice covers the determination of retained austenite phase in steel using integrated intensities (area under peak above background) of X-ray diffraction peaks using chromium Kα or molybdenum...
July 10, 2000
Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation
1. Scope 1.1 This practice covers the determination of retained austenite phase in steel using integrated intensities (area under peak above background) of X-ray diffraction peaks using chromium Kα...
January 1, 1995
Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation
1. Scope 1.1 This practice covers the determination of retained austenite phase in steel using integrated intensities (area under peak above background) of X-ray diffraction peaks using chromium Kα...
January 27, 1984
STANDARD PRACTICE FOR X-RAY DETERMINATION OF RETAINED AUSTENITE IN STEEL WITH NEAR RANDOM CRYSTALLOGRAPHIC ORIENTATION (R 1989)
A description is not available for this item.

References

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